The Eternal Frost Wyrm isn’t just a flex—it's an endgame mobility tool that shrinks frozen maps, opens up new traversal paths, and Odin Diamonds adds a chunky chunk of Combat Rating (CR). Below is a clean, step-by-step path to unlock it, including prerequisites, farming routes, and ways to shave hours off the grind.

What the Mount Gives You (Why It’s Worth It)

Speed & Glide: Top-tier ground speed with a short glacial glide over gaps/ice crevasses.

Cold Resistance Aura: Minor frost resist for you and nearby allies while mounted—great in Niflheim/Jötunheim zones.

Passive CR & Stats: Mount rank boosts CR, Evasion, and Freeze Resist.

Skill: “Wyrm’s Howl” (out-of-combat): brief sprint burst that breaks slow effects.

Unlock Overview (The 4 Pillars)

You’ll complete a collection and craft the harness while hitting a reputation threshold:

Reputation: Niflheim Expedition — Honored (or higher).

Blueprint: Wyrm Tamer’s Harness (from weekly boss or reputation vendor).

Core Mats:

Eternal Core x1 (rare boss drop or 7-day fusion)

Frostheart Scales x30 (minibosses/world events)

Glacial Resin x80 (gathering & elites)

Wyrm Sigils x12 (dungeons: Frostfang Cavern, Shiverpeak Descent)

Bonded Essence: Eidolic Ice (account-bound; crafted from shards)

You’ll likely progress these in parallel rather than in a strict line.

Step 1: Hit the Reputation Gate (Honored with Niflheim Expedition)

Where to farm rep:

Daily Contracts in Frostbitten Reach and Pale Moors. Focus on contracts that involve elite packs; they’re faster and pay better rep.

Event: Icebound Encroachment (hourly). These mini-invasions spawn waves—tag early, stay mobile.

Turn-ins: Frozen Relics and Frostbite Charms from gathering nodes give small rep boosts; bank them for the last push.

Speed tips:

Run with a 2–3 player cell to chain-clear elites.

Slot Freeze Resist food to stay aggressive—less downtime is more rep.

Step 2: Secure the Harness Blueprint

You have two reliable routes; do both if possible to double your chances.

A) Weekly World Boss: Boreal Behemoth (Jötun’s Crown)

Spawns twice weekly. Loot table includes Wyrm Tamer’s Harness at low drop rates, plus Frostheart Scales.

Ideal comp: 1 tank with cleanse, 1 AoE ranged, 1 sustain healer.

Mechanics to watch:

Frigid Roar: Step behind ice spires for LOS; save gap-closers for post-roar punish.

Ground Shatter: Tri-pattern cracks; move to the last-lit segment.

Add Phase: Nuke ice sprites first—they chain-freeze.

B) Reputation Vendor (Honored)

If Behemoth whiffs, buy the blueprint with Niflheim Medallions plus gold. Medallions come from dailies/events and dungeon clears.

Step 3: Farm the Core Materials Efficiently

Frostheart Scales (x30)

Miniboss Circuit: Rimewatch Ridge → Frostworn Basin → Silent Corrie. Minibosses respawn ~10–12 min; cycle clockwise.

World Events: Prioritize Frozen Maw variant—drop chance is best during phase 2/3.

Tip: Tag with a ranged tap, then swap to burst; scales are personal-loot flagged but higher contribution slightly helps.

Glacial Resin (x80)

Gathering: Blue-tinted sap nodes around Icetooth Forest and Skald’s Drift. Use a T3 tapping tool for +30% yield.

Elite Packs: Chillrend Hunters in Pale Moors drop 2–3 resin per pack. Stack a gathering potion between pulls to double-dip productivity.

Wyrm Sigils (x12)

Dungeons:

Frostfang Cavern (Normal/Hard) — 2 sigils per full clear on average.

Shiverpeak Descent (Hard) — higher chance but nastier mechanics.

Route: Two Caverns + one Descent daily keeps morale high and mats flowing.

Mechanics Must-Knows (Descent):

Glacier Shields: Break with consistent damage; don’t waste burst skills during the shield.

Hail Comet: Bait the marker to an empty quadrant; rotate clockwise as a team.

Eternal Core (x1)

Sources:

Rare drop from Boreal Behemoth (bonus roll helps).

Fusion: Combine 7x Eternal Fragments at the Niflheim Forge (7-day cooldown per fusion). Fragments drop from weeklys and first-time Hard clears.

Step 4: Craft Eidolic Ice (Bonded Essence)

Combine Eidolic Shards x50 (shards drop from Icebound Encroachment and dungeon chests).

Craft at the Spirit Anvil in Skadi’s Vigil. Account-bound, so plan on the character you ride most.

Tip: If you’re shard-short, convert 10 Glacial Resin → 1 shard at a poor exchange rate. Use only to finish the last few.

Step 5: Assemble & Bond the Mount

With Blueprint + Eternal Core + 30 Scales + 80 Resin + 12 Sigils + Eidolic Ice, head to Hjálmr’s Workshop (Niflheim capital). Craft time is instant, but bonding (1 hour real-time) is needed before first ride. You can continue playing; bonding ticks down in the background.

Daily/Weekly Checklist (Minimal Grind)

Daily (≈45–60 min):

3–4 Niflheim dailies (rep + medallions)

Miniboss circuit once (Scales)

1 Cavern + 1 Descent (Sigils + shard chances)

10–15 min Resin gather during queue times

Weekly:

Boreal Behemoth (both spawns)

Hard-mode first clears for Fragment chances

Fusion (if 7 fragments ready)

Power & Build Recommendations

CR Target: You’ll feel comfy around the dungeon Hard threshold for consistent Sigils.

Resists: Aim for 20–30% Freeze Resist via food/charms.

Group Synergy: Any comp works, but cleanse + sustained AoE trivialize most ice mechanics.

Gold & Medallion Savings

Don’t impulse-buy the blueprint day one; see if Behemoth drops it first.

Convert excess Resin into shards only to finish Eidolic Ice—otherwise sell Resin early when prices peak post-reset.

Common Pitfalls to Avoid

Ignoring Rep: You can have all mats and cheap Odin Diamonds still be gated; do the dailies early.

Overfarming One Source: Split time between minibosses and dungeons to avoid dry streak tilt.

Bursting Into Glacier Shields: Learn boss windows; save burst for vulnerability phases.

After You Unlock It: Rank-Up Perks

Feed the Wyrm Icy Feed (crafted from Resin + common meat) to level the mount—every few ranks unlocks speed pips and boosts Freeze Resist Aura. Prioritize rank 3 (speed) then rank 5 (aura upgrade).

That’s the route: secure rep, snag/buy the blueprint, run your dungeon loop for Sigils and shards, ride the Behemoth lottery while fusing an Eternal Core in the background, and keep a tight miniboss circuit for Scales. Do the checklist for a week or two, and you’ll be soaring across Niflheim on your Eternal Frost Wyrm like it was forged for you—because, well, it was.